https://www.muffsy.com/
Muffsy DIY Phono Kits
The Muffsy Phono Kits are complete hifi kits for record players for all cartridges ranging from LOMC to HOMC and MM.
diyphonokits
https://hackaday.io/project/12483-muffsy-mc-head-amp
Muffsy MC Head Amp | Hackaday.io
A DIY Dual Mono MC cartridge preamplifier for your record player
mc headamphackadayio